JP4304087B2 - Linear guideway lubrication system - Google Patents

Description

The present invention relates to a lubrication system for a linear guideway, and in particular, by improving the lubrication route of the lubrication oil, the lubrication oil can be divided into the first and second circulation grooves on the average, and the sealing performance of the lubrication system can be improved. The present invention relates to a guideway lubrication system.

A general machine is equipped with a linear motion mechanism. A linear guide way is one of the linear motion mechanisms. The linear guideway needs to lubricate the rolling balls with sufficient lubricating oil. Then, and service life operation becomes normal can long extension bus.

Lubrication path of the lubricating oil of the linear guideway, as shown in FIG. 10, in general, open one lubrication hole 61 on the end cover 60, a predetermined oil passage union surface of the end cover 60 62 When the end cover 60 is aligned with the end surface of the slide block, a lubricating path for lubricating oil is formed, and the lubricating oil flows along the lubricating path on the combined surface of the end cover 60 and is formed above and below the end cover 60. Flow into the first and second circulation grooves 63 and 64 formed.
In order to reduce the manufacturing cost, the combined surface of the end cover is generally designed as one cover plate.
Further, when the cover plate is fitted to the end cover, the first and second circulation grooves 63 and 64 through which the rolling balls circulate are completed.
In this design, since a predetermined oil passage is provided on the cover plate, the lubricating oil is guided and injected into the first and second circulation grooves 63 and 64 through which the rolling balls of the end cover circulate .
In the above two methods, the lubricating oil flows on the same single plane, and it is difficult to divide the lubricating oil into the first and second circulation grooves 63 and 64 through which each rolling ball circulates. Lubrication to the rolling balls in the first and second circulation grooves 63 and 64 through which the balls circulate tends to be uneven. Therefore, the service life of the rolling balls of the linear guideway varies, and the overall service life is shortened.
Since and the lubricating oil passage is exposed to the contact surface between the end cover and the slide block, if the machining accuracy is an error, or if poor plane roughness, lubricant leaking from the contact surface.

The main object of the present invention is to provide a linear guideway lubrication system in which lubricating oil can be distributed to the first and second circulation grooves on average.

Another object of the present invention is to provide a linear guideway lubrication system capable of improving the sealing performance of an oil passage.

The invention according to claim 1 of the present application made to achieve the above object is provided between the end cover and the cover plate on both sides of the slide block, and includes an oil supply hole, a first guide oil passage, A lubrication system for a linear guideway including an oil passage hole, a second guide oil passage, a second oil passage hole, a first circulation groove, and a second circulation groove, wherein the oil injection hole is the first lubrication hole The first guide oil passage is composed of the end cover and a cover plate, and the second guide oil passage is a back surface of the cover plate on the opposite side of the first guide oil passage. The first oil passage hole is for communicating the first guide oil passage and the second guide oil passage, and the first circulation groove and the second circulation groove are provided in the lubrication system. Are sequentially provided, and the second oil passage hole is connected to the second guide oil passage, Located between the single flow grooves and the second time flow grooves, and summarized in that a linear guideway lubrication system, characterized by communicating simultaneously with the first time flow grooves and the second time flow grooves.

In the invention according to claim 2 of the present application, the said cover plate, said end cover and the partition member formed with an annular tongue to prevent the lubricating oil from leaking from the mating surfaces of the cover plate is provided The gist of the present invention is the linear guideway lubrication system according to claim 1 .

In the invention which concerns on Claim 3 of this application, said 1st and 2nd guide oil path is comprised by the combination of the said end cover and the said cover plate, and is provided in the different surface of the said cover plate . The gist of the lubrication system is the linear guideway lubrication system according to claim 1 or 2 .

In the invention according to claim 4 of the present application, the lubricating direction of the linear guideway according to claim 2 or 3, wherein the lubricating direction is an lubricating hole in an end face or a side surface of the end cover. It is a summary.

In the invention according to claim 5 of the present application, the lubrication system is a lubrication system for a linear guideway according to claim 2 or 3, characterized in that the lubrication direction is an lubrication hole on the upper surface of the slide block. Yes.

The linear guideway lubrication system according to claim 2 or claim 3, wherein in the invention according to claim 6 of the present application, the partitioning member is an integrally formed strip and is configured to be disassembled. It is the gist.

The lubrication system for a linear guideway according to the present invention has the following effects.
(B) The oil passage is improved from the conventional two-dimensional oil passage to the three-dimensional oil passage, and the lubricating oil flows through the three-dimensional oil passage to the center of the first circulation groove and the second circulation groove. The rolling balls are supplied to the first and second circulation grooves where they circulate on average, and the rolling balls are properly lubricated.

  (B) The lubricating oil flow path of the present invention is a three-dimensional oil passage, and the lubricating position is the combined surface of the end cover and the cover plate, not the combined surface of the end cover and the slide block. Leaks from the combined surface of the end cover and the slide block.

  (C) Since the cover plate is provided with a special blocking structure, the sealing performance when lubricating is improved.

(2) Since the blocking structure can be disassembled, it can be applied to three common oiling directions, that is, it has good versatility.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a lubrication system for a linear guideway according to the present invention.
An end cover 20 and a cover plate 30 are provided at both ends of the slide block 10, respectively.
When the end cover 20 and the cover plate 30 are combined, first and second flow grooves 63 and 64 for turning and circulating the rolling balls are formed.

2 is a perspective view of the end cover in FIG. 1, FIG. 3 is a perspective view seen from the front side of the cover plate in FIG. 1, and FIG. 4 is a perspective view seen from the rear side of the cover plate in FIG.
The end cover 20 has two lubrication direction, it the oil feed hole 21 on the end face, a lubrication hole 24 Doo on the side.
When the lubricating oil is injected from the oil injection hole 21 into the oil flow hole 31 in the cover plate 30, the partition 35 has an effect of preventing the flow of the lubricating oil to the end face of the slide block . It is guided to both sides by the guide oil passage 32 and flows into the first oil passage holes 33 on both sides .
Furthermore, the lubricating oil flows from the opposite surface of the cover plate 30 (the combined surface with the end cover 20) to the second guide oil passage in the front of the cover plate 30 (the shorter guide oil passage in the combined surface of the front surface and the slide block). The second guide oil passage (substantially the position of the spiral hole 26) at the center position of the first circulation groove 63 and the second circulation groove 64 is guided and communicated with the second oil passage hole 34, thereby providing lubrication. Oil returns to the oil supply curved surface 25 in the end cover 20 and is supplied to the first circulation groove 63 and the second circulation groove 64, so that the rolling balls are properly lubricated.
Further, when the lubricating oil is injected from the oil injection hole 24, the lubricating oil flows into the first guide oil path 22 from the oil flow hole 23, is guided to the oil injection hole 21, and passes through the same flow path as described above. Separately supplied to the first circulation groove 63 and the second circulation groove 64, the rolling balls are properly lubricated.

FIG. 5 is a schematic view showing a state in which the end cover in the lubrication system according to the present invention is assembled to the cover plate, and FIG. 6 is a schematic cross-sectional view of FIG.
Lubricating oil is injected from the end cover 20, guided to the cover plate 30, and flows from the oil passage hole 33 into the second oil passage hole 34 on the spiral hole 26 side.
When the cover plate 30 and the oil supply curved surface 25 in the end cover 20 are combined, an oil supply port 25a is formed, and the lubricating oil in the second oil passage hole 34 flows into the oil supply port 25a.
Since the oil supply port 25a is extremely thin, the lubricating oil is guided to the first circulation groove 63 and the second circulation groove 64 on average by a capillary phenomenon.

7 is a perspective view showing three lubrication directions of the lubrication system according to the present invention, and FIG. 8 is a schematic sectional view of a part of FIG.
In the present invention, oil can be supplied from the oil supply hole 21 or the oil supply hole 24 in the end cover 20 and at the same time from the oil supply hole 11 on the slide block 10.
When the lubricating oil is injected from the lubricating hole 11, the lubricating oil passes through the partition 35 that is opened by the lubricating path 12 and flows into the oil flow hole 31 and the lubricating hole 21.
Here, by installing the fixing screw 50 outside the oil supply hole 21, the oil supply hole 21 is closed, and the lubricating oil is supplied from the first guide oil path 32 to the oil supply port 25a in the same manner as the flow path. And is separately supplied to the first circulation groove 63 and the second circulation groove 64, and the rolling balls are properly lubricated.

FIG. 9 is a schematic view showing a structure in which the partitioning tool in the cover plate according to the present invention can be disassembled.
The partition member 35 of the cover plate 30 according to the present invention is provided on the front surface of the oil flow hole 31 (that is, the combined surface with the slide block), and the main structure of the partition member 35 is an annular groove 351, a conical shape. A recess 352 and an annular convex edge 353 are included.
Since the thickness of the partition member 35 at the annular groove 351 is reduced and the strength thereof is weakened, when a force is applied to the conical recess 352 by the conical fitting 40, the portion surrounded by the annular groove 351 is easily removed from the cover plate 30. It can be separated and becomes a passage in the open state of the partition member 35.
Further, as shown in FIG. 9, an annular convex edge 353 is provided in order to enhance the sealing performance when the oil is injected from the oil supply hole 11 in the slide block. Then, the lubricating oil will not leak out.

1 is a perspective view of a linear guideway lubrication system according to the present invention. FIG. It is a perspective view of the end cover in FIG. It is a perspective view seen from the front side of the cover plate in FIG. It is a perspective view seen from the back side of the cover plate in FIG. It is the schematic which shows the state which assembled the end cover in the lubrication system which concerns on this invention to the cover plate. FIG. 6 is a schematic cross-sectional view of FIG. 5. It is a perspective view which shows the three oil supply directions of the lubrication system which concerns on this invention. FIG. 8 is a schematic sectional view of a part of FIG. 7. It is the schematic which shows the structure which can decompose | disassemble the partition tool in the cover plate which concerns on this invention. It is the schematic which shows the end cover of the lubrication system of the conventional linear guideway.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Slide block 11 Oil supply hole 12 Oil supply path 20 End cover 21 Oil supply hole 22 First guide oil path 23 Oil flow hole 24 Oil supply hole 25 Oil supply curved surface 25a Oil supply port 26 Spiral hole 30 Cover plate 31 Oil flow hole 32 First guide Oil passage 33 First oil passage hole 34 Second oil passage hole 35 Partition 351 Annular groove 352 Conical recess 353 Annular convex edge 40 Conical fitting 50 Fixing screw 60 End cover 61 Oil hole 62 Oil passage 63 First circulation groove 64 Second circulation groove

Claims (6)

Provided between the end cover and the cover plate on both sides of the slide block, an oil injection hole, a first guide oil passage, a first oil passage hole, a second guide oil passage, a second oil passage hole, A linear guideway lubrication system including a first circulation groove and a second circulation groove,
The oil injection hole communicates with the first guide oil passage,
The first guide oil passage is composed of the end cover and a cover plate,
The second guide oil passage is provided on the back surface of the cover plate opposite to the first guide oil passage,
The first oil passage hole is for communicating the first guide oil passage and the second guide oil passage,
The first circulation groove and the second circulation groove are sequentially provided in the lubrication system,
The second oil passage hole is connected to the second guide oil passage, is located between the first circulation groove and the second circulation groove, and communicates the first circulation groove and the second circulation groove simultaneously. It is characterized by
Linear guideway lubrication system. The said cover plate, wherein the end cover and the partition member formed with an annular tongue to prevent the lubricating oil from leaking from the mating surfaces of the cover plate is provided, claim The linear guideway lubrication system according to 1. Said first and second guide oil passage, which is constituted by the combination of the end cover and the cover plate, and being provided on different surfaces of the cover plate, according to claim 1 or The linear guideway lubrication system according to claim 2 .   4. The lubrication system for a linear guideway according to claim 2, wherein the lubrication direction is an lubrication hole on an end face or a side surface of the end cover.   The lubrication system for a linear guideway according to claim 2 or 3, wherein the lubrication direction is an lubrication hole on an upper surface of the slide block.   4. The linear guideway lubrication system according to claim 2, wherein the partition member is a strip integrally formed with the cover plate and has a structure that can be disassembled. 5.

Images